Vanguard Class

1993 - Present

The Vanguard class carries Britain's entire nuclear deterrent. Operating on Continuous At-Sea Deterrence since 1994, at least one submarine is always on patrol, ensuring the UK can always respond to nuclear attack.

Primary Specifications

Displacement

15900 ton

UK's strategic deterrent platform

Length

150 m

Accommodates Trident missile system

Max Depth

350 m

Operational patrol depth

Armament (Primary)

16 Trident II D5 SLBMs

Shared US-UK strategic system

Crew

132

Continuous at-sea deterrent crew

Quick Summary

What it is?

A nuclear-powered ballistic missile submarine (SSBN) for strategic deterrence

Who uses it?

Royal Navy Strategic Weapons Program

Role

Strategic nuclear deterrence (UK's sole nuclear weapons platform)

What's different?

Britain's only nuclear weapons platform - carries 16 Trident II D5 tubes (currently loads 8 missiles per 2010 Strategic Defence Review)

Why it matters?

Guarantees the UK an independent nuclear deterrent capability, with at least one submarine always at sea since 1969.

Real-World Impact

Continuous Deterrence

At least one Vanguard is always at sea, undetectable and ready to respond

Second Strike Assured

Can destroy an attacker's major cities even after the UK is devastated

NATO Commitment

Assigned to NATO but remains under UK operational control

Independent Capability

Gives UK nuclear capability independent of any ally

Additional Features

Propulsion Type

Nuclear (PWR2)

Stealth Features

Submarine Propeller

Special Capabilities

UK Strategic Deterrent

FAQs

1. How many are there?
Four Vanguard-class submarines: Vanguard, Victorious, Vigilant, and Vengeance. This ensures one is always available for patrol.
2. What does 'Continuous At-Sea Deterrence' mean?
3. What missiles does it carry?
4. Why only 8 missiles now?
5. What replaces them?